Neptune
At high altitudes, Neptune's atmosphere is 80% hydrogen and 19% helium. A trace amount of methane is also present. Prominent absorption bands of methane exist at wavelengths above 600 nm, in the red and infrared portion of the spectrum. This absorption of red light by the atmospheric methane is part of what gives Neptune its blue hue.
View all tags
Posted on
Feb 27, 2020
More by Emilis View profile
Like